import book.BookList;
import user.AdminUser;
import user.NormalUser;
import user.User;
import java.util.Scanner;

public class Main {
    //利用向上转型来判断是哪个对象
    public static User login() {
        System.out.println("请输入你的姓名：");
        Scanner scanner=new Scanner(System.in);
        String userName= scanner.nextLine();
        System.out.println("请输入你的身份：1.管理员  2.普通用户");
        int choice = scanner.nextInt();
        if(choice==1){
            return new AdminUser(userName);
        }else{
            return new NormalUser(userName);
        }
    }
    public static void main(String[] args) {
        //0.准备数据
        BookList bookList=new BookList();
        //1.登录
       User user= login();
       while(true){
           int choice=user.menu();
           user.doOperation(choice,bookList);
       }

       //
    }

}
